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um: do not evaluate compiler's library path when cleaning

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Since commit a83e4ca26a ("kbuild: remove cc-option switch from
-Wframe-larger-than="), 'make ARCH=um clean' emits an error message
as follows:

  $ make ARCH=um clean
  gcc: error: missing argument to '-Wframe-larger-than='

We do not care compiler flags when cleaning.

Use the '=' operator for lazy expansion because we do not use
LDFLAGS_pcap.o or LDFLAGS_vde.o when cleaning.

While I was here, I removed the redundant -r option because it
already exists in the recipe.

Fixes: a83e4ca26a ("kbuild: remove cc-option switch from -Wframe-larger-than=")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Tested-by: Nathan Chancellor <natechancellor@gmail.com> [build]
This commit is contained in:
Masahiro Yamada 2020-04-18 03:04:55 +09:00
parent 2ef96a5bb1
commit 7e49afc032
1 changed files with 2 additions and 2 deletions
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4
arch/um/drivers/Makefile
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@ -18,9 +18,9 @@ ubd-objs := ubd_kern.o ubd_user.o
port-objs := port_kern.o port_user.o
harddog-objs := harddog_kern.o harddog_user.o
LDFLAGS_pcap.o := -r $(shell $(CC) $(KBUILD_CFLAGS) -print-file-name=libpcap.a)
LDFLAGS_pcap.o = $(shell $(CC) $(KBUILD_CFLAGS) -print-file-name=libpcap.a)
LDFLAGS_vde.o := -r $(shell $(CC) $(CFLAGS) -print-file-name=libvdeplug.a)
LDFLAGS_vde.o = $(shell $(CC) $(CFLAGS) -print-file-name=libvdeplug.a)
targets := pcap_kern.o pcap_user.o vde_kern.o vde_user.o